OP update: DD is now obsessed with “the one con los monstruos“, i.e., endless Spanish. Thanks for the recommendation!

Will check out the others as well, thanks PPs!

Highly recommend Dino lingo! It’s not free though.

There was one we used called fun spanish and another called something like mindsnacks spanish.

Endless Spanish:
https://www.commonsensemedia.org/app-reviews/endless-spanish

I wouldn’t worry about losing skills too much, especially if you speak Spanish at home. It may be her way of exerting control over an odd situation. Even if you don’t speak Spanish, kids are like sponges, so she’ll soak up the language when she has a chance.

My Pre-K kid was/is in an immersion program and is refusing to speak Spanish at home even though I speak it decently well. Whatever, it's a stressful time for everyone, so I'm not forcing the issue, though I'm concerned she's going to lose a lot of her skills if we're home for months. We do Spanish shows and books, but I'd like to find an interactive app she can have on her iPad while I'm working. Happy to pay for a good one, thanks!